Question

simplifique a expressão n!/
(n-2)! (n-1)

Answer 1

$Resolu\c{c}\~ao \to \left\{\begin{array}{ccc}\frac{n!}{(n-2)!*(n-1)} = \\\\\frac{n*(n-1)(n-2)!}{(n-2)!*(n-1)} = \\\\n\end{array}\right$

Espero ter ajudado! =^.^=